Headset headband



FIG. 1 is a rear left perspective view of a headset headband, the brokenline drawing of a microphone boom is for illustrative purposes only andforms no part of the claimed design;

FIG. 2 is a front elevational view;

FIG. 3 is a rear elevational view;

FIG. 4 is a left side elevational view of the left portion only of theheadband; and,

FIG. 5 is a right side elevational view of the right portion only of theheadband.

The ornamental design for a headset headband, as shown.